Process for the production of alkali metal-and ammonium peroxodisulfate

摘要

The invention relates to a process for the production of a peroxodisulfate, such as ammonium-, sodium- and potassium peroxodisulfate by anodic oxidation of an electrolyte containing a sulfate and/or hydrogen sulfate. The disadvantages of the conventional platinum anodes used for this hitherto can be avoided by using as the anode a diamond film mounted on a conductive carrier and made conductive by doping with a tri- or pentavalent element and by not adding a promoter to the anolyte.